Home / 128,002.20-192,003.30-125,928.60

Finding the Fourth Proportional to 128,002.20, 192,003.30 and 125,928.60

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Solution

The fourth proportional to 128,002.20, 192,003.30 and 125,928.60 is: 188,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.20 : 192,003.30 = 125,928.60 : x
  2. Step 2: Convert to fraction form
    128,002.20/192,003.30 = 125,928.60/x
  3. Step 3: Cross multiply
    128,002.20x = 192,003.30 × 125,928.60
  4. Step 4: Simplify right side
    128,002.20x = 24,178,706,764.38
  5. Step 5: Solve for x
    x = 24,178,706,764.38/128,002.20
  6. Step 6: Final answer
    x = 188,892.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.